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  2. Percentage depth dose curve - Wikipedia

    en.wikipedia.org/wiki/Percentage_depth_dose_curve

    Percent depth dose (PDD), which reflects the overall percentage of dose deposited as compared to the depth of maximum dose, depends on the depth of interest, beam energy, field size, and SSD (source to surface distance) as follows. Of note, PDD generally refers to depths greater than the depth of maximum dose

  3. Piezoelectric direct discharge plasma - Wikipedia

    en.wikipedia.org/wiki/Piezoelectric_direct...

    Piezoelectric direct discharge (PDD) plasma is a type of cold non-equilibrium plasma, generated by a direct gas discharge of a high voltage piezoelectric transformer.It can be ignited in air or other gases in a wide range of pressures, including atmospheric.

  4. Pervasive developmental disorder - Wikipedia

    en.wikipedia.org/wiki/Pervasive_developmental...

    Others use the general category because the term PDD actually refers to a category of disorders and is not a diagnostic label. [4] PDD is not itself a diagnosis, while PDD-NOS is a diagnosis. To further complicate the issue, PDD-NOS can also be referred to as "atypical personality development", "atypical PDD", or "atypical autism". [citation ...

  5. List of abbreviations for diseases and disorders - Wikipedia

    en.wikipedia.org/wiki/List_of_abbreviations_for...

    PDD Pervasive developmental disorder: PDD-NOS Pervasive developmental disorder, not otherwise specified: PDD/NOS Pervasive developmental disorder, not otherwise specified: PDS Pokkuri Death Syndrome PE Pulmonary embolism: PKAN Panthothenate kinase-associated neurodegeneration: PLMD Periodic limb movement disorder: PLS Primary lateral sclerosis: PMD

  6. List of medical abbreviations: P - Wikipedia

    en.wikipedia.org/wiki/List_of_medical...

    Past medical history (see also medical history) PSI: Pneumonia severity index: PSP: phenylsulphtalein: PSS: progressive systemic sclerosis (see scleroderma) PSVT: paroxysmal supraventricular tachycardia: PT: prothrombin time physical therapy (physiotherapy) Pt. patient (from Latin patiens, meaning "one who endures" or "one who suffers") PTA

  7. Pervasive developmental disorder not otherwise specified

    en.wikipedia.org/wiki/Pervasive_developmental...

    PDD-NOS was one of four disorders collapsed into the diagnosis of autism spectrum disorder in the DSM-5, [3] and also was one of the five disorders classified as a pervasive developmental disorder (PDD) in the DSM-IV. [4] The ICD-10 equivalents also became part of its definition of autism spectrum disorder, as of the ICD-11.

  8. Dysthymia - Wikipedia

    en.wikipedia.org/wiki/Dysthymia

    Dysthymia (/ d ɪ s ˈ θ aɪ m i ə / dihs-THIY-mee-uh), also known as persistent depressive disorder (PDD), [3] is a mental and behavioral disorder, [5] specifically a disorder primarily of mood, consisting of similar cognitive and physical problems as major depressive disorder, but with longer-lasting symptoms.

  9. Levodopa-induced dyskinesia - Wikipedia

    en.wikipedia.org/wiki/Levodopa-induced_dyskinesia

    Based on the relationship with levodopa dosing, dyskinesia most commonly occurs at the time of peak l-DOPA plasma concentrations and is thus referred to as peak-dose dyskinesia (PDD). As patients advance, they may present with symptoms of diphasic dyskinesia (DD), which occurs when the drug concentration rises or falls.