femoral shaft, and a small central lucent nidus with a surrounding sclerotic rim.
The features are consistent with an osteoid osteoma.
Surgical resection of certain pathologies often requires quite precise localisation
of lesions prior to surgery. This helps the surgeon locate the area to be removed
more quickly; it also helps the surgeon plan more accurately which areas need
An educational
strategy is
required for
the use of
CT in nuclear
medicine
Figure 2.
to be removed. Better intelligence prior to and during surgery results in increased
probability of removing the affected tissue and reduced operating time. Both can
have an impact on post-operative recovery and, ultimately, patient outcome.
Low dose/resolution and high dose/resolution can both play a part in localising
lesions seen on SPECT studies, and the precise overlay of regional anatomy,
together with co-registered SPECT-CT (structural and functional aspects) of the
lesion make for better surgical localisation, possible radiotherapy treatment
or, even, extraction of tumour tissue. For example, SPECT-CT of brain tumours
using a range of Tc99m based radiopharmaceutical agents, such as Sestamibi
and Tetrofosmin and In-111 Pentetreotide, may be utilised to provide accurate
functional and anatomical diagnosis, and monitor patients’ responses to
2009
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