Medical Design Briefs - July 2021 - 6

MRI machines operate at high voltages yet require
extreme precision when it comes to transmitting and
receiving signals between the human body and the MRI
coils. (Credit: AdobeStock)
Maintaining Quality in Medical Imaging Applications:
Considerations for
Capacitor Selection
T
oday, magnetic resonance imaging
(MRI) technology is widely
used by healthcare professionals
to examine soft tissues and
organs in the body. MRI is an
excellent diagnostic tool because it can be
used to detect a variety of potentially lifethreatening
issues ranging from degenerative
diseases to tumors in a noninvasive
manner. To understand the design challenges
involved in developing MRI equip6
Intro
Cov
ment,
specifically when it comes to the
selection of radiofrequency (RF) and electrical
components such as capacitors, it's
first important to understand the basic
physics behind the way MRI machines
operate.
At a high level, the MRI machines used
today are based on the principle of nuclear
magnetic resonance (NMR). This means
the machines use a strong magnetic field
and computer-generated radio waves to
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ToC
+
-
A
µ
produce cross-sectional images. This is possible
because the molecules that make up
the human body contain hydrogen, and
the nucleus of the hydrogen atom has a
single proton that behaves like a magnet
with a north and south pole. When a
strong magnetic field is applied to the
body, such as the one used with MRI, the
spins of the protons arrange uniformly.
Next, a short computer-generated RF
signal is sent out to the transmit/receive
Medical Design Briefs, July 2021
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Medical Design Briefs - July 2021

Table of Contents for the Digital Edition of Medical Design Briefs - July 2021

Medical Design Briefs - July 2021 - Intro
Medical Design Briefs - July 2021 - Cov4
Medical Design Briefs - July 2021 - Cov1
Medical Design Briefs - July 2021 - Cov2
Medical Design Briefs - July 2021 - 1
Medical Design Briefs - July 2021 - 2
Medical Design Briefs - July 2021 - 3
Medical Design Briefs - July 2021 - 4
Medical Design Briefs - July 2021 - 5
Medical Design Briefs - July 2021 - 6
Medical Design Briefs - July 2021 - 7
Medical Design Briefs - July 2021 - 8
Medical Design Briefs - July 2021 - 9
Medical Design Briefs - July 2021 - 10
Medical Design Briefs - July 2021 - 11
Medical Design Briefs - July 2021 - 12
Medical Design Briefs - July 2021 - 13
Medical Design Briefs - July 2021 - 14
Medical Design Briefs - July 2021 - 15
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Medical Design Briefs - July 2021 - 18
Medical Design Briefs - July 2021 - 19
Medical Design Briefs - July 2021 - 20
Medical Design Briefs - July 2021 - 21
Medical Design Briefs - July 2021 - 22
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Medical Design Briefs - July 2021 - 25
Medical Design Briefs - July 2021 - 26
Medical Design Briefs - July 2021 - 27
Medical Design Briefs - July 2021 - 28
Medical Design Briefs - July 2021 - 29
Medical Design Briefs - July 2021 - 30
Medical Design Briefs - July 2021 - 31
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Medical Design Briefs - July 2021 - 33
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Medical Design Briefs - July 2021 - 35
Medical Design Briefs - July 2021 - 36
Medical Design Briefs - July 2021 - 37
Medical Design Briefs - July 2021 - 38
Medical Design Briefs - July 2021 - 39
Medical Design Briefs - July 2021 - 40
Medical Design Briefs - July 2021 - Cov3
Medical Design Briefs - July 2021 - Cov4a
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