Report/Guide

Rajagopal, S; Fury, C; Zeqiri, B (2015) Primary calibration of 1 mm membrane hydrophones for BIPM/CIPM key comparison CCAUV.U-K4 - final description of NPL results. NPL Report. AC 15

Rajagopal, S; Zeqiri, B; Cox, B* (2015) A scoping study of the potential of photoacoustics to support primary standard calibration of medical ultrasonic hydrophones up to 100 MHz. NPL Report. AC 14

Rajagopal, S; Zeqiri, B (2013) Recommendations on the requirements of measurement infrastructure for elastography metrology. NPL Report. AC 8

Hodnett, M; Zeqiri, B (2008) Industrial trialling of a novel sensor providing objective measurements of the effectiveness of high power ultrasonic equipment -final project report. NPL Report. AC 4

Roberts, N J; Duane, S; Judge, S M; de Lavison, P A G; Rayner, D; Thomas, D J; Zeqiri, B (2007) Proposed NMS programme for acoustics and ionising radiation metrology - October 2007 to September 2010: public comment. NPL Report. DQL-RN 020

Hodnett, M; Gélat, P N; Zeqiri, B (2002) Aperture-based measurement of the effective radiating area of physiotherapy treatment heads: a new rapid system and detailed performance evaluation. NPL Report. CMAM 81

Hodnett, M; Zeqiri, B; Lee, N; Gélat, P N (2001) Report on the feasibility of establishing a reference cavitating medium - final project report. NPL Report. CMAM 58

Gelat, P N; Hodnett, M; Zeqiri, B (2000) Establishing a reference ultrasonic cleaning vessel: Part 1 supporting infrastructure and early measurements. NPL Report. CMAM 55

Zeqiri, B; Gelat, P N; Hodnett, M (1999) A systematic assessment of the 'magnomic' method of high frequency hydrophone calibration. NPL Report. CMAM 26

Zeqiri, B; Hodnett, M (1997) Standardisation of procedures for ultrasonic inspection of polymer matrix composites: transducer characterisation and materials evaluation. NPL Report. CMAM 9

Hodnett, M; Zeqiri, B (1997) A strategy for the development and standardisation of measurement methods for high power/cavitating ultrasonic fields: Review of high power field measurement techniques. NPL Report. CIRA(EXT)015

Zeqiri, B; Hodnett, M; Leighton, T G* (1997) A strategy for the development and standardisation of measurement methods for high power/cavitating ultrasound fields: Final project report. NPL Report. CIRA(EXT)016

Zeqiri, B; Bond, A D (1993) Development of standard measurement methods for essential properties of ultrasound therapy equipment. NPL Report. RSA(EXT)0036

Article

Zeqiri, B; Baker, C; Pounder, A; Serno, D; Rajagopal, S (2023) Large-area pyroelectric-based differential detector for medical Ultrasound Computed Tomography. IEEE Sensors Journal, 23 (16). pp. 18276-18291.

Hacker, L; Ivory, A M; Joseph, J; Grohl, J; Zeqiri, B; Rajagopal, S; Bohndiek, S E (2023) A Stable Phantom Material for Optical and Acoustic Imaging. Journal of Visualized Experiments, 196. e65475

Rajagopal, S; de Melo Baesso, R; Miloro, P; Zeqiri, B (2023) Dissemination of the acoustic pascal: the role and experiences of a National Metrology Institute. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 70 (2). pp. 101-111.

Harris, G R; Howard, S M; Hurrell, A M; Lewin, P A; Schafer, M E; Wear, K A; Wilkins, V; Zeqiri, B (2023) Hydrophone measurements for Biomedical Ultrasound applications: A Review. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 70 (2). pp. 85-100.

Rajagopal, S; Robinson, S P; Ablitt, J; Miloro, P; Wang, L; Zeqiri, B; Hurrell, A (2023) On the importance of consistent insonation conditions during hydrophone calibration and use. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 70 (2). pp. 120-127.

Ambrogio, S; Baesso, R M; Bosio, F; Fedele, F; Ramnarine, K V; Zeqiri, B; Miloro, P (2022) A standard test phantom for the performance assessment of Magnetic Resonance guided High Intensity Focused Ultrasound (MRgHIFU) thermal therapy devices. International Journal of Hyperthermia, 39 (1). pp. 57-68.

Kaupinmäki, S; Cox, B; Arridge, S; Baker, C; Sinden, D; Zeqiri, B (2021) Pyroelectric ultrasound sensor model: directional response. Measurement Science and Technology, 32 (3). 035106 ISSN 0957-0233

Sarno, D; Baker, C; Hodnett, M; Zeqiri, B (2021) Phase-Insensitive Ultrasound Computed Tomography for Acoustic Attenuation Imaging of Breast Phantoms. Proceedings of the SPIE, 11602. 116020T

McGarry, C K; Grattan, L J; Ivory, A M; Leek, F; Liney, G P; Liu, Y; Miloro, P; Rai, R; Robinson, A P; Shih, A J; Zeqiri, B; Clark, C H (2020) Tissue mimicking materials for imaging and therapy phantoms: a review. Physics in Medicine & Biology, 65 (23). 23TR01 ISSN 0031-9155

Zeqiri, B; Wang, L; Miloro, P; Robinson, S P (2020) A Radiation Force Balance Target Material for Applications below 0.5 MHz. Ultrasound in Medicine & Biology, 46 (9). pp. 2520-2529. ISSN 03015629

Bakaric, M; Miloro, P; Zeqiri, B; Cox, B T; Treeby, B E (2020) The Effect of Curing Temperature and Time on the Acoustic and Optical Properties of PVCP. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 67 (3). pp. 505-512. ISSN 0885-3010

Baker, C; Sarno, D; Eckersley, R J; Zeqiri, B (2020) Ring Artifact Correction for Phase-Insensitive Ultrasound Computed Tomography. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 67 (3). pp. 513-525. ISSN 0885-3010

Bakaric, M; Zeqiri, B; Cox, B T; Treeby, B E (2020) Test materials for characterising heating from HIFU devices using photoacoustic thermometry. Proceedings of the SPIE, 11240. 112401D

Baker, C; Sarno, D; Eckersley, R J; Zeqiri, B (2019) Pulse Pileup Correction of Signals From a Pyroelectric Sensor for Phase-Insensitive Ultrasound Computed Tomography. IEEE Transactions on Instrumentation and Measurement, 68 (10). pp. 3920-3931. ISSN 0018-9456

Baesso, R M; Costa-Felix, R P B; Miloro, P; Zeqiri, B (2019) Ultrasonic parameter measurement as a means of assessing the quality of biodiesel production. Fuel, 241. pp. 155-163. ISSN 00162361

Memoli, G; Baxter, K; Jones, H; Mingard, K; Zeqiri, B (2018) Acoustofluidic Measurements on Polymer-Coated Microbubbles: Primary and Secondary Bjerknes Forces. Micromachines, 9 (8). 404 ISSN 2072-666X

Sarno, D T; Hodnett, M; Wang, L; Zeqiri, B (2017) An objective comparison of commercially-available cavitation meters. Ultrasonics Sonochemistry, 34. pp. 354-364.

Fonseca, M*; Zeqiri, B; Beard, P C*; Cox, B T* (2016) Characterisation of a phantom for multiwavelength quantitative photoacoustic imaging. Phys. Med. Biol., 61 (13). pp. 4950-4973.

Ibanez, I*; Hodnett, M; Zeqiri, B; Frota, M N* (2016) Correlating inertial acoustic cavitation emissions with material erosion resistance. Physics Procedia, 87. pp. 16-23.

Rajagopal, S; Fury, C R; Zeqiri, B; Brandt, M*; Wilkens, V*; Koch, C*; Matsuda, Y*; Yoshioka, M*; Ping, Y*; Yan, Z*; Wenping, B*; Felix, R P*; Oliveira, E G*; Uchida, T*; Horiuchi, R*; Xing, G Z* (2016) Report on BIPM/CIPM key comparison CCAUV.U-K4: Absolute calibration of medical hydrophones in the frequency range 0.5 MHz to 20 MHZ. Final report. Metrologia, 53 (1A). 09004.

Fonseca, M*; Saratoon, T*; Zeqiri, B; Beard, P*; Cox, B* (2016) Sensitivity of quantitative photoacoustic tomography inversion schemes to experimental uncertainty. Proc. SPIE - Int. Soc. Opt. Eng., 9708. 97084X

Koukoulas, T; Robinson, S P; Rajagopal, S; Zeqiri, B (2016) A comparison between heterodyne and homodyne interferometry to relise the SI unit of acoustic pressure in water. Metrologia, 53 (2). pp. 891-898.

Bornmann, P*; Hemsel, T*; Sextro, W*; Memoli, G; Hodnett, M; Zeqiri, B (2015) Cavitation detection by a self-sensing ultrasound transducer. tm-Technisches Messen, 82 (2). pp. 73-84.

Fonseca, M*; Zeqiri, B; Beard, P*; Cox, B* (2015) Characterisation of a PVCP-based tissue-mimicking phantom for quantitative photoacoustic imaging. Proc. SPIE - Int. Soc. Opt. Eng., 9539. 953911

Zeqiri, B; Cook, A; Retat, L*; Civale, J*; ter Haar, G* (2015) On measurement of the acoustic nonlinearity parameter uisng the finite amplitude insertion substitution (FAIS) technique. Metrologia, 52 (2). pp. 406-422.

Rajagopal, S; Sadhoo, N; Zeqiri, B (2015) Reference characterisation of sound speed and attenuation of the IEC agar-based tissue-mimicking material up to a frequency of 60 MHz. Ultrasound Med. Biol., 41 (1). pp. 317-333.

Wang, L S; Memoli, G; Hodnett, M; Butterworth, I; Sarno, D; Zeqiri, B (2015) Towards a reference cavitating vessel Part III - design and acoustic pressure characterization of a multi-frequency sonoreactor. Metrologia, 52 (4). pp. 575-594.

Kenwright, D A*; Sadhoo, N; Rajagopal, S; Anderson, T*; Moran, C M*; Hadoke, P W*; Gray, G A*; Zeqiri, B; Hoskins, P R* (2014) Acoustic assessment of Konjac-Carrageenan tissue-mimicking material at 5-60 MHz. Ultrasound Med. Biol., 40 (12). pp. 2895-2902.

Rajagopal, S; Zeqiri, B; Gélat, P N (2014) Calibration of miniature medical ultrasonic hydrophones for frequencies in the range 100 to 500 kHz using an ultrasonically absorbing waveguide. IEEE Trans. Ultrason. Feroelectr. Freq. Control, 61 (5). pp. 765-778.

Koukoulas, T; Rajagopal, S; Robinson, S P; Moss, B*; Zeqiri, B; Theobald, P D (2013) Primary ultrasonic interferometer photodiode characterisation using frequency-modulated laser wavefront radiation. Metrologia, 50 (6). pp. 572-579.

Zeqiri, B; Baker, C; Alosa, G*; Wells, P N T*; Hai-Dong Liang* (2013) Quantitative ultrasonic computed tomography using phase-insensitive pyroelectric detectors. Phys. Med. Biol., 58 (15). pp. 5237-5268.

Memoli, G; Gélat, P N; Hodnett, M; Zeqiri, B (2012) Characterisation and improvement of a reference cylindrical sonoreactor. Ultrasonics Sonochemistry, 19 (4). pp. 939-952.

Butterworth, I; Barrie, J; Zeqiri, B; Zauhar, G*; Parisot, B (2012) Exploiting thermochromic materials for the rapid quality assurance of physiotherapy ultrasound treatment heads. Ultrasound Med. Biol., 38 (5). pp. 767-776.

Zeqiri, B; Zcarbonauhar, G*; Rajagopal, S; Pounder, A* (2012) Systematic evaluation of a secondary method for measuring diagonostic-level medical ultrasound transducers output power based on a large-area pyroelectric sensor. Metrologia, 49 (3). pp. 368-381.

Zeqiri, B; Zauhar, G*; Hodnett, M; Barrie, J* (2011) Progress in developing a thermal method for measuring the output power of medical transducers that exploits the pyroelectric effect. Ultrasonics, 51 (4). pp. 420-424.

Zeqiri, B; Scholl, W*; Robinson, S P (2010) Measurement and testing of the acoustic properties of materials: A review. Metrologia, 47 (2). S156-S171

Zeqiri, B; Scholl, W*; Robinson, S P (2010) Measurement and testing of the acoustic properties of materials: a review. Metrologia, 47 (2). S156-S171

Zeqiri, B; Hodnett, M (2010) Measurements, phantoms and standardisation. Proc. Inst. Mech. Eng. H, J. Eng. Med., 224 (H2). pp. 375-391.

Theobald, P D; Zeqiri, B; Avison, J (2008) Couplants and their influence on AE sensor sensitivity. J. Acoust. Emiss., 26. pp. 91-97.

Zeqiri, B; Barrie, J* (2008) Evaluation of a novel solid-state method for determining the acoustic power generated by physiotherapy ultrasound transducers. Ultrasound Med. Biol., 34 (9). pp. 1513-1527.

Choi. M J*,; Cho, S C*; Kang, G S*; Paeng, D G*; Lee, K I*; Hodnett, M; Zeqiri, B; Coleman, A J* (2008) Quantification of acoustic cavitation produced by a clinical extracorporeal shock wave therapy system using a passive cylindrical detector. Mod. Phys. Lett. B, 22 (11). pp. 809-814.

Hodnett, M; Zeqiri, B (2008) Towards a reference ultrasonic cavitation vessel. Part 2 - investigating the spatial variation and acoustic pressure threshold of inertial cavitation in a 25 kHz ultrasound field. IEEE Trans. Ultrason. Feroelectr. Freq. Control, 55 (8). pp. 1809-1822.

Koukoulas, T; Theobald, P D; Zeqiri, B; Bu, I Y*; Milne, W I* (2008) Utilization of carbon nanofibers for airborne ultrasonic acoustic field detection using heterodyne interferometry. Opt. Lett., 33 (9). pp. 947-949.

Brickley, C J; Zeqiri, B; Robinson, S R (2004) Providing primary standard calibrations beyond 20 MHz. J. Phys., Conf. Ser., 1. pp. 20-25.

Hodnett, M; Zeqiri, B (2004) A detector for monitoring the onset of cavitation during therapy-level measurements of ultrasonic power. J. Phys., Conf. Ser., 1. pp. 112-117.

Hekkenberg, R T*; Beissner, K*; Zeqiri, B; Bezemer, R A*; Hodnett, M (2001) Validated ultrasonic power measurements up to 20 W. Ultrasound Med. Biol., 27 (3). pp. 427-438.

Zeqiri, B; Bickley, C J (2000) A new anechoic material for medical ultrasonic applications. Ultrasound Med. Biol., 26 (3). pp. 481-5.

Preston, R C; Robinson, S P; Zeqiri, B; Esward, T J; Gelat, P N; Lee, N D (1999) Primary calibration of membrane hydrophones in the frequency range 0.5 MHz to 60 MHz. Metrologia, 36 (4). pp. 331-334.

Smith, R*; Zeqiri, B; Jones, L D*; Hodnett, M (1998) Nonlinear propagation in water and its effect on ultrasonic C-scanning. Insight, 40 (1). pp. 12-19.

Zeqiri, B (1998) Physiotherapy ultrasound: setting the standard. Merck Scientific Review, 16. p. 5.

Smith, R*; Jones, L D*; Zeqiri, B; Hodnett, M (1998) Ultrasonic C-scan standardisation for fibre-reinforced polymer composites - minimising the uncertainties in attenuation measurements. Insight, 40 (1). pp. 34-43.

Zeqiri, B; Hodnett, M; Smith, R*; Scudder, L* (1998) An assessment of pulse-echo and hydrophone methods for characterising ultrasonics NDT transducers. Insight, 40 (1). pp. 20-27.

Zeqiri, B; Hodnett, M (1998) A new method for measuring the effective radiating area of physiotherapy treatment heads. Ultrasound Med. Biol., 24 (5). pp. 761-770.

Zeqiri, B; Hodnett, M (1998) A systematic investigation of the effect of collimators on the characteristics of ultrasonic NDT transducers. Insight, 40 (1). pp. 28-33.

Zeqiri, B; Hodnett, M (1998) A systematic investigation of the effect of collimators on the characteristics of ultrasonic NDT transducers. Insight, 40 (4). pp. 28-33.

Zeqiri, B; Hodnett, M (1998) A systematic investigation of the effect of collimators on the characteristics of ultrsonic NDT transducers. Insight, 40 (1). pp. 28-34.

Zeqiri, B (1997) Calibration and safety of physiotherapy ultrasound equipment. Physiotherapy, 83 (10). pp. 559-560.

Hodnett, M; Zeqiri, B (1997) A strategy for the development and standardisation of measurement methods for high power field/cavitating ultrasonic fields: review of high power field measurement techniques. Ultrasonics Sonochemistry, 4. pp. 273-288.

Hekkenberg, R T*; Reibold, R*; Zeqiri, B (1994) Development of standard measurement methods for essential properties of ultrasound therapy equipment. Ultrasound Med. Biol., 20 (1). pp. 83-98.

Zeqiri, B; Reibold, R*; Hekkenberg, R T* (1994) Development of standard measurement methods for essential properties of ultrasound therapy equipment. Ultrasound Med. Biol., 20 (1). pp. 83-98.

Conference or Workshop Item

Shah, A; Ivory, A M; Rajagopal, S; Zeqiri, B (2019) Comparison of techniques to characterise the point spread function of an acoustic-resolution photoacoustic microscope. In: 2019 IEEE International Ultrasonic Symposium (IUS), 6-9 October 2019, Glasgow, UK.

Bakaric, M; Ivory, A; Zeqiri, B; Cox, B T; Treeby, B E (2019) Measurement of the temperature-dependent speed of sound and change in Grüneisen parameter of tissue-mimicking materials. In: 2019 IEEE International Ultrasonic Symposium (IUS), 6-9 October 2019, Glasgow, UK.

Baker, C; Sarno, D; Eckersley, R; Hodnett, M; Zeqiri, B (2019) Phase-Insensitive Ultrasound Tomography of the Attenuation of Breast Phantoms. In: 2019 IEEE International Ultrasonic Symposium (IUS), 6-9 October 2019, Glasgow, UK.

Ivory, A M; Shah, A; Rajagopal, S; Zeqiri, B (2019) Development and investigation of the acoustic properties of tissue-mimicking materials for photoacoustic imaging techniques. In: 2019 IEEE International Ultrasonic Symposium (IUS), 6-9 October 2019, Glasgow, UK.

Wang, L S; Memoli, G; Hodnett, M; Zeqiri, B (2015) Dynamic behaviour of laser nucleated bubbles in a focused ultrasound field. In: 2015 IEEE International Ultrasonic Symposium (IUS), 21-24 October 2015, Taipei, Taiwan.

Bornmann, P*; Hemsel, T*; Sextro, W*; Memoli, G; Hodnett, M; Zeqiri, B (2014) Self-sensing ultrasound transducer for cavitation detection. In: IEEE International Ultrasonics Symposium 2014, 3-6 September 2014, Chicago, IL, USA.

Wang, L S; Memoli, G; Butterworth, I; Hodnett, M; Zeqiri, B (2012) Characterisation of a multi-frequency cavitation vessel. In: International Symposium on Ultrasound in the Control of Industrial Processes (UCIP 2012), 18-20 April 2012, Madrid, Spain.

Zeqiri, B; Davies, S C; Gelat, P N; Hodnett, M; Lula, U I (2000) Novel sensors for monitoring acoustic cavitation. In: 2000 IEEE Ultrasonics Symposium Proceedings, 2000.