However, these modalities have poor spatial resolution and need to be combined with CT imaging for radiotherapy planning.
In spite of their high sensitivity and superior signal-to-background ratio, all of these optical imaging modalities have poor depth penetration due to high absorption and scatter.
> -wrap-foot> While both MDCT and MRI are reasonably accurate in detecting local spread and distant visceral metastases 1, 2, 6, 7, 11, 15, 17, 19, 22,[ 23 ] from pancreatic cancer, both modalities are poor in detecting nodal metastases[ 30 ].
Thirdly, although overall access to invasive palliative techniques was good with rapid access to stents and argon ablation therapy being available in all networks, access to other modalities was poor.
Surgery with or without radiation remains the only treatment modality but poor overall survival (10-year, 44%) underscores the urgent need for mechanism-based therapies.
Clinician's bias to one or the other modality and poor exposure to PD during training or recent completion of training were found be associated with bias against home dialysis therapies in general [ 17- 20].
Several studies have investigated and demonstrated a positive correlation between cEEG findings and angiographic vasospasm, DCI, and functional outcome [ 99– 102], supporting the critical care use of this modality in poor-grade or sedated SAH patients.
There was also a marginally significant main effect of aphasia group [ F 1,19) = 4.080, P = 0.058] a main effect of modality reflecting poorer performance for words [ F 1,19) = 6.858, P = 0.017] and an interaction of aphasia group and modality [ F 1,19) = 6.298, P = 0.021] (see below).
Most current imaging modalities either suffer from poor penetration depth or require exogenous contrast agents.
However, the clinical utility of these imaging modalities is limited by poor tissue penetration and low spatial resolution, making them impractical for use in patient trials.
