H. Zaidi

Publications598
h-index60
Citations13,495
Highly Influential Citations390
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PET versus SPECT: strengths, limitations and challenges
TLDR
This paper intends to balance the capabilities of the two major molecular imaging modalities used in nuclear medicine, namely positron emission tomography and single photon emission computed tomography (SPECT).
A novel fuzzy C-means algorithm for unsupervised heterogeneous tumor quantification in PET.
TLDR
A novel unsupervised PET image segmentation technique that allows the quantification of lesions in the presence of heterogeneity of tracer uptake was developed and evaluated and could find other applications in clinical oncology such as the assessment of response to treatment.
Design and performance evaluation of a whole-body Ingenuity TF PET-MRI system.
TLDR
The results were comparable to PET-CT systems demonstrating that the effect of design modifications required on the PET system to remove the harmful effect of the magnetic field on the PMTs was negligible, and it is conceived that advantages of hybrid PET-MRI will become more evident in the near future.
PET-guided delineation of radiation therapy treatment volumes: a survey of image segmentation techniques
TLDR
Several image segmentation approaches have been proposed and used in the clinical setting including thresholding, edge detection, region growing, clustering, stochastic models, deformable models, classifiers and several other approaches.
Quantitative Analysis in Nuclear Medicine Imaging
TLDR
This paper presents Quantitative Imaging-Based Dosimetry and Treatment Planning in Radionuclide Therapy, which combines quantitative analysis in Functional Brain Imaging and Quantitative Analysis in Nuclear Oncologic Imaging.
Determination of the attenuation map in emission tomography.
TLDR
The physical and methodologic basis of attenuation correction is presented and recent developments in algorithms used to compute the attenuation map in ECT are summarized.
Magnetic resonance imaging-guided attenuation and scatter corrections in three-dimensional brain positron emission tomography.
TLDR
MRI-based attenuation correction in 3D brain PET would likely be the method of choice for the foreseeable future as a second best approach in a busy nuclear medicine center and could be applied to other functional brain imaging modalities such as SPECT.
Relevance of accurate Monte Carlo modeling in nuclear medical imaging.
  • H. Zaidi
  • Physics
    Medical physics
  • 1 April 1999
TLDR
A derivation and methodological basis for Monte Carlo modeling techniques for nuclear medical imaging innovations and examples of some useful features of such sophisticated tools in connection with common computing facilities and more powerful multiple-processor parallel processing systems are provided.
Partial Volume Correction Strategies in PET.
Impact of miscentering on patient dose and image noise in x-ray CT imaging: phantom and clinical studies.
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