# mkiso PHP Scripts — Analysis

## File Inventory

| File | Purpose | Output |
|------|---------|--------|
| `mkiso.php` | Retrieve DICOM studies by accession number from PACS, wrap in ISO with microdicom viewer, serve as download | ISO download |
| `mkiso2.php` | Retrieve DICOM studies from PACS, then forward to another PACS (C-STORE relay) | DICOM forwarded to `172.16.0.120:104` |
| `mkiso_multiple.php` | Multi-accession variant of mkiso.php, with patient-name lookup in DB, ISO download | ISO download with patient-name filename |

---

## Shared Flow (all three scripts)

```
1. Parse accession_number from GET parameter
2. Create temp working dir: /tmp/dicomdir_<uniqid>/
3. Copy microdicom viewer files into temp dir (bootstrap DICOM viewer ISO)
4. Fetch DICOM studies from PACS via Java dcm4che2 dcmqr (C-MOVE)
5. [PACS is: ABPACS@localhost:11112, AE CDRECORD:10104 is the local receiver]
```

---

## The Java Command — Deep Dive

```bash
JAVA_HOME=/usr/lib/jvm/jdk1.8.0_144 LANG=en_US.iso-8859-1 \
  /usr/local/dcm4che/dcm4che2/bin/dcmqr \
  -L CDRECORD:10104 \
  ABPACS@localhost:11112 \
  -cmove CDRECORD \
  -qAccessionNumber=${accession_number} \
  -cstore ${cstore} \
  -cstoredest ${dicomdir}/DICOMDIR
```

**This single Java process does FOUR things:**

| Role | Parameter | Description |
|------|-----------|-------------|
| **Storage SCP** | `-L CDRECORD:10104` | Listens as AE `CDRECORD` on port `10104` to receive incoming C-STORE from PACS |
| **Query SCU** | `-qAccessionNumber=X` | Queries PACS for studies matching the accession number |
| **C-MOVE SCU** | `-cmove CDRECORD` | Tells PACS to send matched studies to `CDRECORD` (itself) |
| **File writer** | `-cstoredest DICOMDIR` | Saves received DICOM files to the specified directory |

**The `-cstore` parameter** specifies a DICOM SOP Class to negotiate. dcm4che2 maps the two-letter modality codes to SOP Class UIDs internally:

| Code | SOP Class | UID |
|------|-----------|-----|
| CR | Computed Radiography | 1.2.840.10008.5.1.4.1.1.1 |
| CT | CT Image Storage | 1.2.840.10008.5.1.4.1.1.2 |
| MR | MR Image Storage | 1.2.840.10008.5.1.4.1.1.4 |
| US | Ultrasound Image | 1.2.840.10008.5.1.4.1.1.6.1 |
| NM | Nuclear Medicine | 1.2.840.10008.5.1.4.1.1.20 |
| PET | PET Image | 1.2.840.10008.5.1.4.1.1.128 |
| SC | Secondary Capture | 1.2.840.10008.5.1.4.1.1.7 |
| XA | X-Ray Angio | 1.2.840.10008.5.1.4.1.1.12.1 |
| XRF | X-Ray Fluoroscopy | 1.2.840.10008.5.1.4.1.1.12.2 |
| DX | Digital X-Ray | 1.2.840.10008.5.1.4.1.1.1.1 |
| MG | Mammography | 1.2.840.10008.5.1.4.1.1.1.2 |
| PR | Presentation State | 1.2.840.10008.5.1.4.1.1.11.1 |
| KO | Key Object Selection | 1.2.840.10008.5.1.4.1.1.88.59 |
| SR | Structured Report | 1.2.840.10008.5.1.4.1.1.88.11 |

**The loop iterates over ALL 14 modalities for the same accession number.** Most will return nothing — the script uses a brute-force "try everything" approach since it doesn't know which modality a given accession number uses.

---

## Per-Script Differences

### mkiso.php
```
Fetch → genisoimage → serve ISO download → cleanup
```
- ISO filename: `{accession_number}.iso`
- After PACS fetch: creates ISO with genisoimage, streams it as download, deletes temp files

### mkiso2.php
```
Fetch → dcmsend to 172.16.0.120:104 → exit
```
- **No ISO creation.** Instead forwards retrieved DICOM files to another PACS server (`172.16.0.120:104`)
- Uses `dcmsend +sd +rd 172.16.0.120 104 $dicomdir/DICOMDIR` (dcmtk `dcmsend` — a C-STORE SCU)
- ISO creation and download code is commented out
- This script acts as a **DICOM relay/proxy**: PACS A → temp dir → PACS B

### mkiso_multiple.php
```
Parse comma-separated ACC#s → DB lookup (patient name) → 
for each ACC#, for each modality: fetch from PACS → 
genisoimage → serve ISO download → cleanup
```
- Supports **comma-separated** accession numbers (e.g. `?accession_number=MR.001,CT.002`)
- **Database lookup** on two DBs:
  - `pacsdb_his` (192.168.2.7) — finds `AccessionNumber` → `MEDRECID`, `RegID`
  - `pacsdb_his` — `MEDRECID` → `Nama` (patient name)
- ISO filename: `{PATIENT_NAME}-{ACCESSION_LIST}.iso` (alphanumeric only)
- Inner loop: for each accession number, try all 14 modalities

---

## DICOM Operations Summary

| Script | C-MOVE (PACS→local) | C-STORE (local→PACS2) | ISO gen | DB lookup |
|--------|---------------------|----------------------|---------|-----------|
| mkiso.php | ✅ 14 modality loop | ❌ | ✅ | ❌ |
| mkiso2.php | ✅ 14 modality loop | ✅ (dcmsend) | ❌ | ❌ |
| mkiso_multiple.php | ✅ 14 modality × N acc# | ❌ | ✅ | ✅ (patient name) |

---

## Environment

| Component | Version/Location |
|-----------|-----------------|
| dcm4che2 (Java) | `/usr/local/dcm4che/dcm4che2/bin/dcmqr` |
| Java | JDK 1.8.0_144 (`/usr/lib/jvm/jdk1.8.0_144`) |
| genisoimage | `/usr/bin/genisoimage` |
| dcmsend | `/usr/bin/dcmsend` (dcmtk C-STORE SCU) |
| dcmtk (static) | `/data/dcmtk-bin/` (v3.6.6) — findscu, movescu, storescp, getscu |
| microdicom | `/var/www/html/microdicom/` (DICOM viewer bootstrap files) |
| PACS source | `ABPACS@localhost:11112` |
| Local AE | `CDRECORD:10104` |
| PACS dest (mkiso2) | `172.16.0.120:104` |
| DB (mkiso_multiple) | `192.168.2.7:3306` (pacsdb_his / rsabt201107) |