Get Breast MRI Fundamentals and Technical Aspects PDF

By R. Edward Hendrick

ISBN-10: 0387735062

ISBN-13: 9780387735061

Discussing the most up-tp-date and pioneering suggestions in breast reconstruction with no using implants, THE ARTISTRY OF BREAST RECONSTRUCTION WITH AUTOLOGOUS TISSE is the amount each breast health professional has been looking ahead to. Focusing not just on the best way to reconstruct breasts following mastectomy but additionally on how one can in achieving the top measure of aesthetic good fortune attainable, this quantity describes intimately Dr. Kroll's suggestions in utilizing autologous tissue. Over 500 images and customized illustrations exhibit and evaluate the assorted innovations utilized in breast reconstruction with autologous tissue corresponding to traditional (pedicled) TRAM flaps, loose TRAM flaps, the prolonged latissimus dorsi myocutaneous flap, the Rubens fats pad unfastened flap, between others. additionally contain are chapters on rapid and behind schedule reconstructions, shaping the breast mound, nipple and areolar reconstruction and selection of strategy, follow-up and sufferer choice. Dr. Kroll's method of reconstructive breast surgical procedure both encompasses artwork and technological know-how and either are totally represented in this quantity.

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Extra info for Breast MRI Fundamentals and Technical Aspects

Sample text

Science 1971; 171: 1151–1153. 4. Gore JC, Kennan RP. Physical and physiological basis of magnetic relaxation. In Stark DD, Bradley WG, eds. Magnetic Resonance Imaging, 3rd Edition. V. Mosby Publishing Co, 1999; Vol 1, pp 33–42. 5. Hendrick RE, Haacke EM. Basic physics of MR contrast agents and maximization of image contrast. J. Magn. Reson. Imaging 1993; 3: 137–148. 6. Padhani AR. Contrast agent dynamics in breast MRI. In Warren R, Coulthard A, eds. Breast MRI in practice. London: Martin Dunitz, 2002.

The reason that T1 is higher for most breast lesions, including cancers, than for normal fibroglandular tissues is that lesions tend to have higher water concentrations, and therefore fewer macromolecules per unit volume, than normal breast tissues. The exceptions to this rule are lesions with high fat content, such as lipomas, or lesions with a high fibrous content, both of which have shorter T1 values than normal fibroglandular tissues. 5 Gd-chelates, like other macromolecules, act as energy sponges, absorbing the energy needed for the hydrogen nuclei to transition from their excited to unexcited states.

T1-relaxation describes the recovery of longitudinal magnetization due to thermal interactions between excited, higher energy hydrogen nuclei (spins) and nearby, large macromolecules within the sample (the lattice). These interactions decrease the number of higher energy state (down-oriented) dipoles and increase the number of lower energy (up-oriented) hydrogen nuclear dipoles. As these energy transitions take place, the strength of tissue magnetization pointing along B0 increases. Because T1 recovery involves interactions between spins and the larger surrounding lattice, it is sometimes referred to as “spin-lattice” relaxation.

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Breast MRI Fundamentals and Technical Aspects by R. Edward Hendrick


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