Karen L. Johnson - Publications, H-index & Citations

Karen L. Johnson

university of massachusetts system

21H指数

129论文数

1.8K被引数

收录论文 18

发表时间

Cross-vender, cross-tracer, and cross-protocol deep transfer learning for attenuation map generation of cardiac SPECT

JOURNAL OF NUCLEAR CARDIOLOGY

IF2.7

2022-12-01

OAAI

Chen, Xiongchao; Hendrik Pretorius, P.; Zhou, Bo; Liu, Hui; Johnson, Karen; Liu, Yi-Hwa; King, Michael A.; Liu, Chi

Retrospective fractional dose reduction in Tc-99m cardiac perfusion SPECT/CT patients: A human and model observer study

JOURNAL OF NUCLEAR CARDIOLOGY

IF2.7

2021-04-01

OAAI

Pretorius, P. Hendrik; Ramon, Albert Juan; King, Michael A.; Konik, Arda; Dahlberg, Seth T.; Parker, Mathew W.; Botkin, Naomi F.; Johnson, Karen L.; Yang, Yongyi; Wernick, Miles N.

Raising the Digital Profile of Facial Palsy: National Surveys of Patients' and Clinicians' Experiences of Changing UK Treatment Pathways and Views on the Future Role of Digital Technology

JOURNAL OF MEDICAL INTERNET RESEARCH

IF6

2020-10-05

OAAI

Szczepura, Ala; Holliday, Nikki; Neville, Catriona; Johnson, Karen; Khan, Amir Jahan Khan; Oxford, Samuel W.; Nduka, Charles

Improving Diagnostic Accuracy in Low-Dose SPECT Myocardial Perfusion Imaging With Convolutional Denoising Networks

IEEE TRANSACTIONS ON MEDICAL IMAGING

IF9.8

2020-09-01

OAAI

Ramon, Albert Juan; Yang, Yongyi; Pretorius, P. Hendrik; Johnson, Karen L.; King, Michael A.; Wernick, Miles N.

Evaluation of the effect of reducing administered activity on assessment of function in cardiac gated SPECT

JOURNAL OF NUCLEAR CARDIOLOGY

IF2.7

2020-04-01

OAAI

Juan Ramon, Albert; Yang, Yongyi; Wernick, Miles N.; Pretorius, P. Hendrik; Johnson, Karen L.; Slomka, Piotr J.; King, Michael A.

Investigation of the physical effects of respiratory motion compensation in a large population of patients undergoing Tc-99m cardiac perfusion SPECT/CT stress imaging

JOURNAL OF NUCLEAR CARDIOLOGY

IF2.7

2020-02-01

OAAI

Pretorius, P. Hendrik; Johnson, Karen L.; Dahlberg, Seth T.; King, Michael A.

Facial palsy: when and why to refer for specialist care

BRITISH JOURNAL OF GENERAL PRACTICE

IF5.2

2019-10-31

OAAI

Butler, Daniel P.; Morales, Daniel R.; Johnson, Karen; Nduka, Charles

Improving perfusion defect detection with respiratory motion correction in cardiac SPECT at standard and reduced doses

JOURNAL OF NUCLEAR CARDIOLOGY

IF2.7

2019-10-01

OAAI

Song, Chao; Yang, Yongyi; Ramon, Albert Juan; Wernick, Miles N.; Pretorius, P. Hendrik; Johnson, Karen L.; Slomka, Piotr J.; King, Michael A.

Investigation of dose reduction in cardiac perfusion SPECT via optimization and choice of the image reconstruction strategy

JOURNAL OF NUCLEAR CARDIOLOGY

IF2.7

2018-12-01

OAAI

Ramon, Albert Juan; Yang, Yongyi; Pretorius, P. Hendrik; Slomka, Piotr J.; Johnson, Karen L.; King, Michael A.; Wernick, Miles N.

Do Intranasal Vasoconstrictors Increase Blood Pressure? A Randomized, Double-Blinded, Placebo-Controlled Trial

ANNALS OF EMERGENCY MEDICINE

IF5

2017-10-01

OAAI

Bellew, S. D.; Johnson, K. L.; Kummer, T.

Correction of hysteretic respiratory motion in SPECT myocardial perfusion imaging: Simulation and patient studies

MEDICAL PHYSICS

IF3.2

2017-02-16

OAAI

Dasari, Paul K. R.; Konik, Arda; Pretorius, P. Hendrik; Johnson, Karen L.; Segars, William P.; Shazeeb, Mohammed S.; King, Michael A.

Adaptation of the modified Bouc-Wen model to compensate for hysteresis in respiratory motion for the list-mode binning of cardiac SPECT and PET acquisitions: Testing using MRI

MEDICAL PHYSICS

IF3.2

2016-11-30

OAAI

Dasari, Paul K. R.; Shazeeb, Mohammed Salman; Koenik, Arda; Lindsay, Clifford; Mukherjee, Joyeeta M.; Johnson, Karen L.; King, Michael A.

Digital anthropomorphic phantoms of non-rigid human respiratory and voluntary body motion for investigating motion correction in emission imaging

PHYSICS IN MEDICINE AND BIOLOGY

IF3.4

2014-06-13

OAAI

Koenik, Arda; Connolly, Caitlin M.; Johnson, Karen L.; Dasari, Paul; Segars, Paul W.; Pretorius, P. H.; Lindsay, Clifford; Dey, Joyoni; King, Michael A.

Comparison of methods of acquiring attenuation maps for cardiac SPECT in the presence of respiratory motion

JOURNAL OF NUCLEAR CARDIOLOGY

IF2.7

2013-12-01

OAAI

Koenik, Arda; Kikut, Janusz; Lew, Richard; Johnson, Karen; King, Michael A.

An evaluation of data-driven motion estimation in comparison to the usage of external-surrogates in cardiac SPECT imaging

PHYSICS IN MEDICINE AND BIOLOGY

IF3.4

2013-10-10

OAAI

Mukherjee, Joyeeta Mitra; Hutton, Brian F.; Johnson, Karen L.; Pretorius, P. Hendrik; King, Michael A.