An introduction to the principles of medical imaging by Chris Guy, Dominic Ffytche PDF

By Chris Guy, Dominic Ffytche

ISBN-10: 1860945023

ISBN-13: 9781860945021

ISBN-10: 1860947468

ISBN-13: 9781860947469

The creation of X-ray computed tomography (CT) 25 years in the past revolutionized scientific imaging; X-ray CT itself supplied the 1st transparent cross-sectional photographs of the human physique, with monstrous distinction among varieties of smooth tissue. the iconic legacy of CT is, despite the fact that, the spur that it gave to the following advent of tomographic imaging options into diagnostic nuclear medication and the terribly quick improvement of magnetic resonance imaging (MRI) over this era.

This ebook is a non-mathematical creation to the foundations underlying sleek scientific imaging, taking tomography as its primary subject matter. the 1st 3 chapters hide the final rules of tomography, a survey of the atomic and nuclear physics which underpins sleek imaging, and a evaluate of the most important concerns fascinated about radiation safety. the next chapters deal in flip with X-ray radiography, gamma imaging, MRI and ultrasound. The scientific position of diagnostic imaging is illustrated within the ultimate bankruptcy by utilizing fictional scientific histories. 3 appendices supply a extra mathematical heritage to the tomographic approach, the foundations of mathematical Fourier equipment, and the maths of MRI.

This revised variation comprises new introductory sections at the suitable physics of molecules quite often, and water, specifically. each bankruptcy now has a desk of key issues with cross-references to different sections. a number of figures have additionally been revised.

The booklet is meant to supply a huge introductory heritage to tomographic imaging for 2 teams of readers: the physics or engineering undergraduate taking into consideration focusing on clinical physics, and the scientific scholar or clinician utilizing tomographic ideas in study and scientific perform.

Show description

Read Online or Download An introduction to the principles of medical imaging PDF

Best radiology books

Download e-book for iPad: The Thyroid: Fine-Needle Biopsy and Cytological Diagnosis of by S.R. Orell, J. Philips, P. Vielh

This publication studies present reviews of the function of fine-needle biopsy (FNB) within the prognosis of either diffuse and nodular thyroid illness and offers cytological diagnostic standards and histological correlation for many entities. The historical past of FNB of the thyroid is in brief reviewed, through a precis of uncomplicated anatomical and physiological information.

Read e-book online Clinical MR Spectroscopy: Techniques and Applications PDF

In vivo magnetic resonance spectrosopy (MRS) is more and more getting used within the scientific surroundings, really for neurological issues. medical MR Spectroscopy - options and functions explains either the underlying actual rules of MRS and gives a perceptive evaluate of scientific MRS purposes.

Get Through Final FRCR Part A: SBAs for the Modular by Megan Bydder, Alexander Clark, Nicholas Coupe, John Pattison PDF

Reflecting the most recent swap to the examination, the advent of unmarried top solution questions (SBAs), this booklet is totally modern and gives a useful perception into the hot examination structure. offering applicants with a wealth of perform questions and arranged via material into the modular structure, this finished choice of perform SBAs is designed to assist applicants investigate their very own wisdom, supporting thorough coaching for the examination.

Ultrasonography in the ICU: Practical Applications by Paula Ferrada PDF

This article offers a easy advisor of the rules and purposes of ultrasound within the severe care surroundings. The textual content additionally addresses the elemental and medical makes use of of ultrasound, together with medical circumstances on the finish of every of the 7 sections of the scientific subdivisions. the ultimate chapters concentrate on the problems of teaching, certification, credentialing and billing.

Additional info for An introduction to the principles of medical imaging

Example text

The relative number of X-ray photons that survive the trip through the box is here represented by P1(1) = 10. Each little volume will attenuate the beam by an amount determined by the local attenuation, so that each number in the projection represents the total attenuation through the box, along a particular line, the sum of box numbers along that line. P1(2), the second number in the first projection, is obtained by shifting the beam by one column to the right. The different projections arise from different choices of beam direction.

3. More complex filter functions are used in gamma imaging in order to remove the effects of noise on the final image. 4. 6, using the filtered backprojection method. The model consists of a small homogeneous disc, and a toroid. Different values of ‘attenuation coefficient’ correspond to different greys. The reconstruction has been interrupted after 10, 30, 127 projections, obtained at intervals of 1…2°, have been added. A crude reconstruction of the form of the phantom is clearly visible even after 30 projections.

In X-ray CT the projections are lines through the origin of K-space and so the complete sampling is achieved by assembling a set of ‘spokes’ with a set of ‘beads’ on each spoke. Each bead corresponds to one value of KX, KY and at each of these points there is one value of F(KX, KY). The complete set constitutes a sampled version of the 2D Fourier transform of µ(X, Y ). In MRI there is considerably more flexibility in the way in which K-space is actually sampled. Conventionally in MRI, the values of F(KX, KY) profiles are collected along lines parallel to KX at constant values of KY, each projection then corresponds to a different value of KY .

Download PDF sample

An introduction to the principles of medical imaging by Chris Guy, Dominic Ffytche


by Edward
4.1

Rated 4.01 of 5 – based on 24 votes